Dec 01 16:08:32.628 INFO testing halcyon/rust_tut against 1.30.1 for beta-1.31-5
Dec 01 16:08:32.628 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:08:33.133 INFO [stdout] 12ff650054e65ad62e53609004f2f61fc7f9e0ad7853ad30afa73ad2ea44f2c7
Dec 01 16:08:33.135 INFO running `"docker" "start" "-a" "12ff650054e65ad62e53609004f2f61fc7f9e0ad7853ad30afa73ad2ea44f2c7"`
Dec 01 16:08:34.579 INFO [stderr] usermod: no changes
Dec 01 16:08:34.639 INFO [stderr]    Compiling rust_tut v0.1.0 (/source)
Dec 01 16:08:35.227 INFO [stderr] warning: unused imports: `u16`, `u32`, `u64`, `u8`
Dec 01 16:08:35.227 INFO [stderr]  --> src/main.rs:1:30
Dec 01 16:08:35.227 INFO [stderr]   |
Dec 01 16:08:35.227 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Dec 01 16:08:35.227 INFO [stderr]   |                              ^^  ^^^  ^^^  ^^^
Dec 01 16:08:35.227 INFO [stderr]   |
Dec 01 16:08:35.227 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 01 16:08:35.227 INFO [stderr] 
Dec 01 16:08:35.227 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 01 16:08:35.227 INFO [stderr]   --> src/main.rs:62:8
Dec 01 16:08:35.227 INFO [stderr]    |
Dec 01 16:08:35.227 INFO [stderr] 62 |     if (age_old == 5) {
Dec 01 16:08:35.227 INFO [stderr]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 01 16:08:35.227 INFO [stderr]    |
Dec 01 16:08:35.227 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 01 16:08:35.227 INFO [stderr] 
Dec 01 16:08:35.227 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 01 16:08:35.227 INFO [stderr]   --> src/main.rs:78:23
Dec 01 16:08:35.227 INFO [stderr]    |
Dec 01 16:08:35.227 INFO [stderr] 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Dec 01 16:08:35.227 INFO [stderr]    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 01 16:08:35.227 INFO [stderr] 
Dec 01 16:08:35.227 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 01 16:08:35.227 INFO [stderr]   --> src/main.rs:85:12
Dec 01 16:08:35.227 INFO [stderr]    |
Dec 01 16:08:35.227 INFO [stderr] 85 |         if ((x % 2) == 0) {
Dec 01 16:08:35.228 INFO [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 01 16:08:35.228 INFO [stderr] 
Dec 01 16:08:35.228 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 01 16:08:35.228 INFO [stderr]   --> src/main.rs:90:12
Dec 01 16:08:35.228 INFO [stderr]    |
Dec 01 16:08:35.228 INFO [stderr] 90 |         if (x > 10) {
Dec 01 16:08:35.228 INFO [stderr]    |            ^^^^^^^^ help: remove these parentheses
Dec 01 16:08:35.228 INFO [stderr] 
Dec 01 16:08:35.395 INFO [stderr] warning: unused variable: `num`
Dec 01 16:08:35.395 INFO [stderr]  --> src/main.rs:8:9
Dec 01 16:08:35.395 INFO [stderr]   |
Dec 01 16:08:35.395 INFO [stderr] 8 |     let num = 10;
Dec 01 16:08:35.395 INFO [stderr]   |         ^^^ help: consider using `_num` instead
Dec 01 16:08:35.395 INFO [stderr]   |
Dec 01 16:08:35.395 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 01 16:08:35.395 INFO [stderr] 
Dec 01 16:08:35.395 INFO [stderr] warning: unused variable: `f_name`
Dec 01 16:08:35.395 INFO [stderr]   --> src/main.rs:34:10
Dec 01 16:08:35.395 INFO [stderr]    |
Dec 01 16:08:35.395 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 01 16:08:35.395 INFO [stderr]    |          ^^^^^^ help: consider using `_f_name` instead
Dec 01 16:08:35.395 INFO [stderr] 
Dec 01 16:08:35.395 INFO [stderr] warning: unused variable: `l_name`
Dec 01 16:08:35.395 INFO [stderr]   --> src/main.rs:34:18
Dec 01 16:08:35.395 INFO [stderr]    |
Dec 01 16:08:35.395 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 01 16:08:35.395 INFO [stderr]    |                  ^^^^^^ help: consider using `_l_name` instead
Dec 01 16:08:35.395 INFO [stderr] 
Dec 01 16:08:35.395 INFO [stderr] warning: unused variable: `count`
Dec 01 16:08:35.395 INFO [stderr]    --> src/main.rs:116:9
Dec 01 16:08:35.395 INFO [stderr]     |
Dec 01 16:08:35.395 INFO [stderr] 116 |     let count = rand_string.chars().count();
Dec 01 16:08:35.395 INFO [stderr]     |         ^^^^^ help: consider using `_count` instead
Dec 01 16:08:35.395 INFO [stderr] 
Dec 01 16:08:35.422 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:08:35.422 INFO [stderr]   --> src/main.rs:10:9
Dec 01 16:08:35.422 INFO [stderr]    |
Dec 01 16:08:35.422 INFO [stderr] 10 |     let mut age: i32 = 40;
Dec 01 16:08:35.422 INFO [stderr]    |         ----^^^
Dec 01 16:08:35.422 INFO [stderr]    |         |
Dec 01 16:08:35.422 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:08:35.422 INFO [stderr]    |
Dec 01 16:08:35.422 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 01 16:08:35.422 INFO [stderr] 
Dec 01 16:08:35.422 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:08:35.422 INFO [stderr]   --> src/main.rs:52:9
Dec 01 16:08:35.422 INFO [stderr]    |
Dec 01 16:08:35.422 INFO [stderr] 52 |     let mut neg_4 = -4i32;
Dec 01 16:08:35.422 INFO [stderr]    |         ----^^^^^
Dec 01 16:08:35.422 INFO [stderr]    |         |
Dec 01 16:08:35.422 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:08:35.422 INFO [stderr] 
Dec 01 16:08:36.118 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
Dec 01 16:08:36.123 INFO [stderr] su: No module specific data is present
Dec 01 16:08:36.849 INFO running `"docker" "inspect" "12ff650054e65ad62e53609004f2f61fc7f9e0ad7853ad30afa73ad2ea44f2c7"`
Dec 01 16:08:37.091 INFO running `"docker" "rm" "-f" "12ff650054e65ad62e53609004f2f61fc7f9e0ad7853ad30afa73ad2ea44f2c7"`
Dec 01 16:08:37.361 INFO [stdout] 12ff650054e65ad62e53609004f2f61fc7f9e0ad7853ad30afa73ad2ea44f2c7
Dec 01 16:08:37.365 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:08:37.735 INFO [stdout] 910d83c1e39e6de25ca1b138871b540005599e1134a803b00115a8a1a761dc55
Dec 01 16:08:37.735 INFO running `"docker" "start" "-a" "910d83c1e39e6de25ca1b138871b540005599e1134a803b00115a8a1a761dc55"`
Dec 01 16:08:38.951 INFO [stderr] usermod: no changes
Dec 01 16:08:39.001 INFO [stderr]    Compiling rust_tut v0.1.0 (/source)
Dec 01 16:08:39.483 INFO [stderr] warning: unused imports: `u16`, `u32`, `u64`, `u8`
Dec 01 16:08:39.483 INFO [stderr]  --> src/main.rs:1:30
Dec 01 16:08:39.483 INFO [stderr]   |
Dec 01 16:08:39.483 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Dec 01 16:08:39.483 INFO [stderr]   |                              ^^  ^^^  ^^^  ^^^
Dec 01 16:08:39.483 INFO [stderr]   |
Dec 01 16:08:39.483 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 01 16:08:39.483 INFO [stderr] 
Dec 01 16:08:39.483 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 01 16:08:39.483 INFO [stderr]   --> src/main.rs:62:8
Dec 01 16:08:39.483 INFO [stderr]    |
Dec 01 16:08:39.483 INFO [stderr] 62 |     if (age_old == 5) {
Dec 01 16:08:39.483 INFO [stderr]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 01 16:08:39.483 INFO [stderr]    |
Dec 01 16:08:39.483 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 01 16:08:39.483 INFO [stderr] 
Dec 01 16:08:39.483 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 01 16:08:39.483 INFO [stderr]   --> src/main.rs:78:23
Dec 01 16:08:39.483 INFO [stderr]    |
Dec 01 16:08:39.483 INFO [stderr] 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Dec 01 16:08:39.483 INFO [stderr]    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 01 16:08:39.483 INFO [stderr] 
Dec 01 16:08:39.483 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 01 16:08:39.483 INFO [stderr]   --> src/main.rs:85:12
Dec 01 16:08:39.483 INFO [stderr]    |
Dec 01 16:08:39.483 INFO [stderr] 85 |         if ((x % 2) == 0) {
Dec 01 16:08:39.483 INFO [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 01 16:08:39.483 INFO [stderr] 
Dec 01 16:08:39.483 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 01 16:08:39.483 INFO [stderr]   --> src/main.rs:90:12
Dec 01 16:08:39.483 INFO [stderr]    |
Dec 01 16:08:39.483 INFO [stderr] 90 |         if (x > 10) {
Dec 01 16:08:39.483 INFO [stderr]    |            ^^^^^^^^ help: remove these parentheses
Dec 01 16:08:39.483 INFO [stderr] 
Dec 01 16:08:39.670 INFO [stderr] warning: unused variable: `num`
Dec 01 16:08:39.670 INFO [stderr]  --> src/main.rs:8:9
Dec 01 16:08:39.670 INFO [stderr]   |
Dec 01 16:08:39.670 INFO [stderr] 8 |     let num = 10;
Dec 01 16:08:39.670 INFO [stderr]   |         ^^^ help: consider using `_num` instead
Dec 01 16:08:39.670 INFO [stderr]   |
Dec 01 16:08:39.670 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 01 16:08:39.670 INFO [stderr] 
Dec 01 16:08:39.670 INFO [stderr] warning: unused variable: `f_name`
Dec 01 16:08:39.670 INFO [stderr]   --> src/main.rs:34:10
Dec 01 16:08:39.670 INFO [stderr]    |
Dec 01 16:08:39.670 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 01 16:08:39.670 INFO [stderr]    |          ^^^^^^ help: consider using `_f_name` instead
Dec 01 16:08:39.670 INFO [stderr] 
Dec 01 16:08:39.670 INFO [stderr] warning: unused variable: `l_name`
Dec 01 16:08:39.670 INFO [stderr]   --> src/main.rs:34:18
Dec 01 16:08:39.670 INFO [stderr]    |
Dec 01 16:08:39.670 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 01 16:08:39.670 INFO [stderr]    |                  ^^^^^^ help: consider using `_l_name` instead
Dec 01 16:08:39.670 INFO [stderr] 
Dec 01 16:08:39.670 INFO [stderr] warning: unused variable: `count`
Dec 01 16:08:39.670 INFO [stderr]    --> src/main.rs:116:9
Dec 01 16:08:39.670 INFO [stderr]     |
Dec 01 16:08:39.670 INFO [stderr] 116 |     let count = rand_string.chars().count();
Dec 01 16:08:39.670 INFO [stderr]     |         ^^^^^ help: consider using `_count` instead
Dec 01 16:08:39.670 INFO [stderr] 
Dec 01 16:08:39.699 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:08:39.699 INFO [stderr]   --> src/main.rs:10:9
Dec 01 16:08:39.699 INFO [stderr]    |
Dec 01 16:08:39.699 INFO [stderr] 10 |     let mut age: i32 = 40;
Dec 01 16:08:39.699 INFO [stderr]    |         ----^^^
Dec 01 16:08:39.699 INFO [stderr]    |         |
Dec 01 16:08:39.699 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:08:39.699 INFO [stderr]    |
Dec 01 16:08:39.699 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 01 16:08:39.699 INFO [stderr] 
Dec 01 16:08:39.699 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:08:39.699 INFO [stderr]   --> src/main.rs:52:9
Dec 01 16:08:39.699 INFO [stderr]    |
Dec 01 16:08:39.699 INFO [stderr] 52 |     let mut neg_4 = -4i32;
Dec 01 16:08:39.699 INFO [stderr]    |         ----^^^^^
Dec 01 16:08:39.699 INFO [stderr]    |         |
Dec 01 16:08:39.699 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:08:39.699 INFO [stderr] 
Dec 01 16:08:40.135 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
Dec 01 16:08:40.135 INFO [stderr] su: No module specific data is present
Dec 01 16:08:40.659 INFO running `"docker" "inspect" "910d83c1e39e6de25ca1b138871b540005599e1134a803b00115a8a1a761dc55"`
Dec 01 16:08:40.997 INFO running `"docker" "rm" "-f" "910d83c1e39e6de25ca1b138871b540005599e1134a803b00115a8a1a761dc55"`
Dec 01 16:08:41.199 INFO [stdout] 910d83c1e39e6de25ca1b138871b540005599e1134a803b00115a8a1a761dc55
Dec 01 16:08:41.211 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:08:41.493 INFO [stdout] 5844dd384633213b4f6a4ddb2ce4a90c542a089862e147857e48124ae46a6fa5
Dec 01 16:08:41.495 INFO running `"docker" "start" "-a" "5844dd384633213b4f6a4ddb2ce4a90c542a089862e147857e48124ae46a6fa5"`
Dec 01 16:08:42.011 INFO [stderr] usermod: no changes
Dec 01 16:08:42.037 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 01 16:08:42.037 INFO [stderr]      Running /target/debug/deps/rust_tut-ebb3088e9b431ded
Dec 01 16:08:42.040 INFO [stdout] 
Dec 01 16:08:42.040 INFO [stdout] running 0 tests
Dec 01 16:08:42.040 INFO [stdout] 
Dec 01 16:08:42.040 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 16:08:42.040 INFO [stdout] 
Dec 01 16:08:42.048 INFO [stderr] su: No module specific data is present
Dec 01 16:08:42.400 INFO running `"docker" "inspect" "5844dd384633213b4f6a4ddb2ce4a90c542a089862e147857e48124ae46a6fa5"`
Dec 01 16:08:42.585 INFO running `"docker" "rm" "-f" "5844dd384633213b4f6a4ddb2ce4a90c542a089862e147857e48124ae46a6fa5"`
Dec 01 16:08:42.871 INFO [stdout] 5844dd384633213b4f6a4ddb2ce4a90c542a089862e147857e48124ae46a6fa5
